Some of the humor is quite adult but not explicit. I’d expect a lot of it to go over a kid’s head tbh and they’d probably laugh at the silliness. But you, the adult, know what you’re truly laughing at. And if you’re okay with that then the choice is yours.
I listened to an episode last night and it tickles the same absurd funny bone, loved it! I feel like there’s a touch of the absurd or whimsy in the British humor that I respond to, even though not being British I often don’t understand some references. Case in point, I love the podcast Three Bean Salad.